Aeroplane wing



April 26; 1932'. V; c. Momma AEROPLANE WING Filed April 11, 1929' EN TOR. lawns:

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Patented Apr. 26, 1932 I outrun stares PATENT- @FFEQE VICTOR C. NORQUIST, OF KANSAS CITY, MISSOURI, ASSIGNOR, BY MESN E ASSIGNMENTS, T0 BUTLER AIRCRAFT CORPORATION, OF KANSAS CITY, MISSOURI, A. CORPORATION @F MISSOURI Application filed April 11,

This invention relates to improvements in aeroplane wing construction, and refers more particularly to an aeroplane wing and wings constructed of a single metallic covering sheet made rigid by horizontal spars running longitudinally of the win Among the salient o jects of the invention areto provide a wing in which the covering material is corrugated and of sufiicient thickness to give the proper rigidity and strength to. the wing, this covering material being doubled back upon itself and united along the trailing edge of the wing, and to support the central portion of the wing by spars the entire surface being formed into the desired I contour.

Referring to the drawings, Fig. 1 is a plan view of the wing.

Fig. 2 is a sectional view taken along the line 22 in Fig. 1.

Fig. 3 is a view taken on line 33 in Fig. 2. Fig. 4 is a viewtaken along the line 4-4 in Fig. 1.

' metal are first united by double lock seams along their edges, as shown in Fig. 4, and the entire sheet which extends the length of the wing made up of a plurality of plane sheets united by the lockseams is then corrugated. After corrugation the nose of the wing or leading edge of the wing is formed in the corrugated sheet by means of a bending brake having a plurality of rolls which coincide with the depressions cf the corrugations and bend the corrugated sheet into the desired form. This bending which is at the present time being used in the sheet metal art for bending corrugated metal, maintains the cor- AEROPLANE WING 1929. Serial No. 354,246.

rugations in the sheet or wing covering throughout the bending operation.

In the drawings, the plane sheets 1 are first united in double lock seams such as shown in Fig. 4:, and the sheet then corrugated as 'shown in Figs. land 3. The corrugated V spars is united along the trailing edge by means of rivets 4, spot welding, seam welding, crimping or. otherwise.

It is understood that although a monoplane wing has been shown in the drawings, the construction is adapted to monoplanes, biplanes, triplanes or any other type of aeroplanes.

The corrugations in the sheets give the wing covering rigidity in the line of flight, and the spars furnish the required bracing and strength to withstand longitudinal stress. The construction provided 1s simple.

is an efiicient type of wing which can be manufactured quickly and easily, at less cost, and afl'ords greater strength and less weightthan the common type where fabric and wood are used with a plurality of ribs and braces or spars. T

' I claim as my invention:

1. An aeroplane wing comprising a pl rality of pieces of metal united by double lock seams extending parallel to the line of flight to form a unitary sheet and unjointed transversely to the line 'of flight, said sheet corrugated in the direction of the line of flight and doubled back to form the wing contour with the free edges united alongthe trailing edge of the wing, the corrugations extending around the leading edge of the wing, said sheet mounted on horizontal s ars extending transversely of the line of flig t.

2. An aerofoil, comprising supporting spars extending longitudinally of the wing and a plurality of pieces of metal continuous as to length and united b double l'ock seams to form a unitary sheet t e width of the airfoil, said sheet corrugated in the direction of the line of flight and having joints in the sheets only lparallel to the corrugations and doubled bac to form the Wing contour with the free edges united along the trailing edge of the wing, the corrugations extending around the leadin edge of the wing.

VI TOR G. NORQUIST. 

